Module 12 Test Review: Radical Expressions and Equations
Name _______________________________________ Date __________________ Class __________________
Module 12 Test Review: Radical Expressions and Equations
For 1?3, translate the expression with rational exponents into a radical expression and simplify, if possible.
7
1. y 4
_______________________________________
2
2.
243 32
5
_______________________________________
3. (81)0.75
_______________________________________
4. Is each expression equivalent to 0.361.5 ?
2
A 0.363
Yes
No
B 0.216
Yes
No
2
C 3 0.36
Yes
No
8. 5 323
________________________________________
9. The annual rate of inflation, in percent, of
a home that increases in value from p to
q over a period of n years is
1
I
100
q p
n
100.
Find
the
annual
rate
of inflation, to the nearest tenth of a
percent, of a home that doubles in value
over 20 years.
________________________________________
10. Is each expression equivalent to n s ? t
1
A sn 1 tn
B
1
-1
Yes
No
Yes
No
3
D 0.362
E 0.363
Yes
No
Yes
No
C ns nt
D n s n t
Yes
No
Yes
No
For 5?8, translate the radical expression into an expression with rational exponents and simplify, if possible.
1
E
s n t
Yes
No
5. m9
_______________________________________
6. 6 4 3
_______________________________________
7. 3 85
_______________________________________
For 11?16, simplify the expression. Assume that all variables are positive. All exponents should be positive in simplified form. Rationalize any irrational denominators.
3
5 4
11.
83
7
89
________________________________________
Original content Copyright ? by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
59
Name _______________________________________ Date __________________ Class __________________
2 2
12.
5a3 b
7
6b 5
_______________________________________
x5y3 13.
4 x2y5
19. 3x 13 x 5
________________________________________
20. 3 4x 1 5
________________________________________
21. 3x 11 x 3
_______________________________________
14. 5 325 61252
_______________________________________
15. 3 21m2 3 7m2n
_______________________________________ 34 380
16. 35
_______________________________________
17. The surface area S of a sphere as a
function of its volume V is given by
2
S
4
3V 4
3
.
Rewrite
the
expression
for
the surface area as the product of a
simplified coefficient term and a variable
term using only positive exponents. Then
write the approximate formula with the
coefficient term rounded to the nearest
thousandth.
_______________________________________
For 18?22, solve each equation. Identify any extraneous roots.
1
18. x 32 1 x
_______________________________________
________________________________________
1
22. 2 x 23 x 2
________________________________________
23. Choose True or False for each statement
1
about the equation x 142 x 2.
A It has one solution.
True
False
B It has two solutions.
True
False
C It has one extraneous solution.
True
False
D It has two extraneous solutions.
True
False
E It has no solutions.
True
False
24. The equation + 6400 = 31.3 ? 1011 2 relates the distance d in kilometers of a certain GPS satellite above the surface of the Earth to the number of hours t it takes the satellite to complete one orbit. The average distance of this satellite above the surface of the Earth is 20,100 kilometers. To the nearest hour, how long does it take the GPS satellite to complete one orbit of the Earth?
_________________________________
Original content Copyright ? by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
60
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